diff options
| author | Tim Lunn <tim@feathertop.org> | 2023-12-03 15:39:59 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-02-05 23:14:33 +0300 |
| commit | 250cfafb3e9d05838f0abfd6578d3922a5a2e4f2 (patch) | |
| tree | 227119b9ae517ba648e934f8574f8f91ef8efef7 /drivers/i2c | |
| parent | 5ea4007636b27800fa01555428aa9c198aeb5bf4 (diff) | |
| download | linux-250cfafb3e9d05838f0abfd6578d3922a5a2e4f2.tar.xz | |
i2c: rk3x: Adjust mask/value offset for i2c2 on rv1126
[ Upstream commit 92a85b7c6262f19c65a1c115cf15f411ba65a57c ]
Rockchip RV1126 is using old style i2c controller, the i2c2
bus uses a non-sequential offset in the grf register for the
mask/value bits for this bus.
This patch fixes i2c2 bus on rv1126 SoCs.
Signed-off-by: Tim Lunn <tim@feathertop.org>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-rk3x.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/i2c/busses/i2c-rk3x.c b/drivers/i2c/busses/i2c-rk3x.c index 4362db7c5789..086fdf262e7b 100644 --- a/drivers/i2c/busses/i2c-rk3x.c +++ b/drivers/i2c/busses/i2c-rk3x.c @@ -1295,8 +1295,12 @@ static int rk3x_i2c_probe(struct platform_device *pdev) return -EINVAL; } - /* 27+i: write mask, 11+i: value */ - value = BIT(27 + bus_nr) | BIT(11 + bus_nr); + /* rv1126 i2c2 uses non-sequential write mask 20, value 4 */ + if (i2c->soc_data == &rv1126_soc_data && bus_nr == 2) + value = BIT(20) | BIT(4); + else + /* 27+i: write mask, 11+i: value */ + value = BIT(27 + bus_nr) | BIT(11 + bus_nr); ret = regmap_write(grf, i2c->soc_data->grf_offset, value); if (ret != 0) { |